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Fine and hyperfine structure of the two lowest bound states of Be − and their first two ionization thresholds
Author(s) -
Beck Donald R.,
Nicolaides C. A.
Publication year - 1984
Publication title -
international journal of quantum chemistry
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.484
H-Index - 105
eISSN - 1097-461X
pISSN - 0020-7608
DOI - 10.1002/qua.560260843
Subject(s) - hyperfine structure , atomic physics , ionization , excited state , ion , electron affinity (data page) , chemistry , electron , dipole , physics , molecule , quantum mechanics , organic chemistry
The two lowest bound excited states of the Be − ion, 1s 2 2s2p 2 4 P and 1s 2 2p 3 4 S 0 , and their respective thresholds, Be 1s 2 2s2p 3 P 0 and Be 1s 2 2p 2 3 P, and the thresholds of these, Be + 1s 2 2s and Be + 1s 2 2p, have been examined using many‐body methods. Here, we present the electron affinities (EAs) or ionization potentials, fine and hyperfine structure, and the electric dipole transition probabilities associated with these states and compare them with existing theory and experiment when available. Based on our new EA, a suggestion is made as to why no negative ion transition has yet been seen in the laboratory.